/*------------------------------------------------------------------------
日期控件
function Cal_dropdown(edit,min,max)
弹出日历，可不给参数min和max，参数edit如无，则查找日期图片的第一个兄弟edit。
function Cal_datevalid(edit,min,max)
检查edit中值是否为大于等于min，小于等于max的有效日期格式字符串。
是则返回 true，否则返回false
可不给参数min和max(字符串格式)
参数edit必须有，如果edit无，则必须是：edit为edit和img的父亲(如span、div)的第一个元素
最新修改 文兵 2002-12-25 适用于IE 5.0以上浏览器
*/
var Cal_popup;
var Cal_edit;
var Cal_editdate = new Date();
var Cal_maxdate;
var Cal_mindate;
function Cal_clearTime(thedate)
{
thedate.setHours(0);
thedate.setMinutes(0);
thedate.setSeconds(0);
thedate.setMilliseconds(0);
}
var Cal_today = new Date();
Cal_clearTime(Cal_today);
function Cal_decDay(thedate,days)
{
if(days==0);
else if (!days) days = 1;
thedate.setTime(thedate - days*24*60*60*1000);
}
function Cal_incMonth(year,month)
{
if (month == 11) {
month = 0;
year++;
} else month++;
Cal_writeHTML(year,month);
}
function Cal_decMonth(year,month)
{
if (month == 0) {
month = 11;
year--;
} else month--;
Cal_writeHTML(year,month);
}
function Cal_decYear(year,month)
{
Cal_writeHTML(year-1,month);
}
function Cal_incYear(year,month)
{
Cal_writeHTML(year+1,month);
}
function Cal_writeHTML(theyear,themonth)
{
var html=
''+
'| <年 | '+
'<月 | '+
'';
html += theyear + '年' + (themonth + 1) + '月 | '+
'月> | '+
'年> | ';
html +=
'
'+
''+
'';
var day1 = new Date(theyear,themonth,1);
Cal_decDay(day1,day1.getDay()); // 日历开始日
for (var i=1;i<=6;i++) {
html += '';
for (var j=1;j<=7;j++) {
html += '';
Cal_decDay(day1,-1);
}
html += '
';
if (day1.getMonth() != themonth) break;
}
html +=
'
'+
'今天是 '+
''+
Cal_today.getFullYear() + '-' + (Cal_today.getMonth()+1) + '-' + Cal_today.getDate() +
'
';
if (!Cal_popup) {
Cal_popup = document.createElement(
'');
document.body.insertAdjacentElement('beforeEnd',Cal_popup);
}
Cal_popup.innerHTML = html;
}
function Cal_hide()
{
Cal_popup.releaseCapture();
Cal_popup.style.display="none";
}
function Cal_capture_click()
{
var obj=event.srcElement;
if (Cal_popup.contains(obj)) {
if ( (obj!=Cal_popup) && obj.onclick) obj.onclick();
} else {
Cal_hide();
}
}
function Cal_capture_mover()
{
var obj=event.srcElement;
if (Cal_popup.contains(obj)) {
if ( (obj!=Cal_popup) && obj.onmouseover) obj.onmouseover();
}
}
function Cal_capture_mout()
{
var obj=event.srcElement;
if (Cal_popup.contains(obj)) {
if ( (obj!=Cal_popup) && obj.onmouseout) obj.onmouseout();
}
}
// 字符串转换为日期
function Cal_strtodate(str)
{
var date = Date.parse(str);
if (isNaN(date)) {
date = Date.parse(str.replace(/-/g,"/")); // 识别日期格式：YYYY-MM-DD
if (isNaN(date)) date = 0;
}
return(date);
}
//返回日期间相差的天数
function Cal_DateDiff(Date1, Date2)
{
return (Date2-Date1)/(24*60*60*1000);
}
//返回日期间相差的月数(最大误差小于一个月)
function Cal_MonthDiff(DateA, DateB)
{
Date1=new Date();
Date2=new Date();
Date1.setTime(DateA);
Date2.setTime(DateB);
months = (Date2.getFullYear() - Date1.getFullYear()) * 12;
addmonths = Date2.getMonth() - Date1.getMonth();
months = months + addmonths;
if(Date2.getDate() < Date1.getDate())
months--;
return months;
}
// 弹出日历，可不给参数min和max，参数edit必须有
function Cal_dropdown(edit,min,max) {
var DateIMG = window.event.srcElement;
if (!edit) {
edit = DateIMG.parentElement.children(0);
if ((!edit.type) || (edit.type.toLowerCase() != "text")) return;
}
if(edit.readOnly) return;
Cal_edit = edit;
var date = Cal_strtodate(edit.value);
if (date == 0) date = Cal_today.getTime();
if (max) Cal_maxdate = Cal_strtodate(max);
else Cal_maxdate=0;
if (min) Cal_mindate = Cal_strtodate(min);
//else Cal_mindate = 0; // modified by huhao, 2003/4/30: 大部分调用都没有给min和max参数。而Date(0)是1970年1月1日。max = 0时认为是无限制，不用改。
else Cal_mindate = new Date(1900, 1, 1);
Cal_editdate.setTime(date);
Cal_writeHTML(Cal_editdate.getFullYear(),Cal_editdate.getMonth());
// 定位
var pos =
event.clientX - event.offsetX - DateIMG.offsetLeft
+ edit.offsetLeft - document.body.clientLeft + document.body.scrollLeft;
var max =
document.body.scrollLeft + document.body.getBoundingClientRect().right
- Cal_popup.style.pixelWidth;
// 如果下拉框宽度超出则往左移
if (pos > max) Cal_popup.style.left = max;
else Cal_popup.style.left = pos;
pos =
event.clientY - event.offsetY - DateIMG.offsetTop
+ edit.offsetTop + edit.offsetHeight - document.body.clientTop + document.body.scrollTop;
// 如果下拉框高度超出则往上弹出
if (pos > document.body.scrollTop + document.body.getBoundingClientRect().bottom - Cal_popup.clientHeight)
pos -= document.body.clientTop + edit.offsetHeight + Cal_popup.clientHeight;
Cal_popup.style.top = pos;
Cal_popup.style.display="";
// 如果下拉框弹出后看不见（超出底部），则自动滚页
// if (Cal_popup.offsetTop + Cal_popup.offsetHeight + document.body.clientTop>=
// document.body.offsetHeight + document.body.scrollTop)
// document.body.doScroll("scrollbarPageDown");
Cal_popup.setCapture();
}
// 点击日期
function Cal_clickday(day,edit)
{
if (Cal_maxdate != 0) day = Math.min(day,Cal_maxdate);
day = Math.max(day,Cal_mindate);
Cal_editdate.setTime(day);
Cal_edit.value = Cal_editdate.getFullYear() + "-" + (Cal_editdate.getMonth()+1) + "-"
+ Cal_editdate.getDate();
Cal_hide();
Cal_edit.focus();
}
function Cal_datevalid(edit,min,max)
{
// 检查edit中值是否为大于等于min，小于等于max的有效日期格式字符串。
var date = Cal_strtodate(edit.value);
if (date == 0) return false;
if (max) {
var max = Cal_strtodate(max);
if ((max!=0)&&(date>max)) return false;
}
if (min) {
var min = Cal_strtodate(min);
if ((min!=0)&&(date